Canon IP4800 Series Service Manual

About Canon IP4800 Series Service Manual

Canon IP4800 Series Table of Contents

1. TROUBLESHOOTING ..................................................................................................3
1-1. Troubleshooting by Symptom.......................................................................................... 3
1-2. Operator Call Error (Alarm LED Lit In Orange) Troubleshooting..................................... 5
1-3. Service Call Error (by Cyclic Blinking of Alarm and Power LEDs) Troubleshooting........ 8
2. REPAIR / ADJUSTMENT / SETTINGS.......................................................................13
2-1. Major Replacement Parts and Adjustment.................................................................... 13
2-2. Adjustment and Settings in Service Mode .................................................................... 20
2-3. Adjustment in User Mode.............................................................................................. 24
2-4. Grease Application........................................................................................................ 25
2-5. Special Notes on Servicing ........................................................................................... 27

Canon IP4800 Series TROUBLESHOOTING

Troubleshooting by Symptom

Symptom Solution
The power does not turn on.
The power turns off immediately after
power-on.
(1) Confirm cable connection:
- Harness ass'y
=> No incomplete connection, cable breakage, or cable
caught in units
(2) Replace the following item(s):
- Logic board ass'y
- AC adapter
- DC harness ass'y
A strange noise occurs. (1) Examine and remove any foreign material from the
drive portions.
(2) Replace the following item(s):
- The part generating the strange noise
- Logic board ass'y
Paper feed problems (multi-feeding,
skewed feeding, no feeding).
(1) Examine and remove any foreign material from the
following parts:
- ASF unit
- PE sensor
- Paper guide unit
- Pressure roller unit
- Spur unit
(2) Confirm that the paper guides are set properly.
(3) Confirm the PF rear cover and the cassette conditions.
(4) Confirm cable connection
- PE sensor cable
- Paper feed relay harness ass'y
=> No incomplete connection, cable breakage, or cable
caught in units
(5) Replace the following item(s):
- ASF unit (for paper feeding error from the rear
tray)
- Pick-up arm unit (for paper feeding error from the
cassette)
- PE sensor board ass'y
- Pressure roller unit
- PE sensor cable
- Cassette unit
The disc tray is not pulled in the feeder*2. (1) Confirm that the reflector on the back of the disc tray is
clean:
- Cleaning of the reflector
(2) Replace the following item(s):
- Logic board ass'y
- CDR tray ass'y
- Platen unit
Printer not recognized by a USB-connected
computer.
(1) Confirm the USB cable connection.
(2) Connect the printer to another computer via the USB
cable, and check if the printer is recognized.
(3) Replace the following item(s):
- USB cable
- Logic board ass'y
No printing, or no color ejected.
Faint printing, or white lines on printouts.
Uneven printing.
Improper color hue.
(1) Confirm the ink tank conditions:
- No remainder of the outer film (the air-through
must be opened)
- Re-setting of an ink tank
- Whether the ink tank is Canon-genuine one or not
- Whether the ink tank is refilled one or not
(2) Remove foreign material from the purge unit caps, if
any.
(3) Perform cleaning or deep cleaning of the print head.
(4) Perform print head alignment.
(5) Replace the following item(s):
- Print head*1, and ink tanks
- Logic board ass'y
- Purge drive system unit
Paper gets smeared. (1) Clean the inside of the printer.
(2) Perform bottom plate cleaning.
(3) Perform paper feed roller cleaning.
(4) Replace the following item(s):
- Pressure roller unit (if smearing is heavy)
- Print head*1 (when smearing is caused by the print
head)
The back side of paper gets smeared. (1) Clean the inside of the printer.
(2) Perform bottom plate cleaning.
(3) Examine the platen ink absorber.
(4) Examine the paper eject roller.
(5) Replace the following item(s):
- The part in the paper path causing the smearing
Graphic or text is enlarged on printouts in
the carriage movement direction.
(1) Confirm that the carriage slit film is free from smearing
or scratches:
- Cleaning of the timing slit film.
(2) Replace the following item(s):
- Timing slit strip film
- Carriage unit
- Logic board ass'y
Graphic or text is enlarged on printouts in
the paper feed direction.
(1) Confirm that the LF / EJ slit film is free from smearing
or scratches:
- Cleaning of the LF / EJ slit film.
(2) Replace the following item(s):
- Timing slit disk feed film
- Timing slit disk eject film
- Timing sensor unit
- Platen unit
- Logic board ass'y
Smearing in disc label printing.
Streaks on the printed disc label
(1) Check if the printable disc is the recommended one or
not:
- Change of the printer driver settings
(2) Replace the following item(s):
- CDR tray ass'y
- Pressure roller unit (if smearing is heavy)
- Platen unit

*1: Replace the print head only after the print head deep cleaning is performed 2 times, and when the problem persists.
*2: Only for disc label printing supported regions.

Canon IP4800 Series Operator Call Error (Alarm LED Lit In Orange) Troubleshooting

Errors and warnings are displayed by the following ways:

  • Operator call errors are indicated by the Alarm LED lit in orange, and messages are displayed on the printer driver Status Monitor.
  • Error codes (the latest 10 error codes at the maximum) are printed in the "operator call/service call error record" area in EEPROM information print.

Buttons valid when an operator call error occurs:

  • ON button: To turn the printer off and on again.
  • Resume/Cancel button: To cancel the job at error occurrence, and to clear the error.

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Canon IP4800 Series Service Manual